Weather in Karlsruhe

Get the latest information about the weather in Karlsruhe. In this section, you will find current reports, forecasts, and useful weather charts to help you plan your day.

Karlsruhe, located in Germany, is characterised by a temperate climate with four distinct seasons. Visitors can expect warm summers, which can be quite sunny, and cool, damp winters. Spring and autumn usually offer mild and pleasant weather conditions, serving as transitional periods between the summer heat and winter chill.

The summer months, especially July and August, are the warmest, with average temperatures around 20-21°C and maximums reaching approximately 25-26°C. Winters, by contrast, are quite cool: the average temperature in January is about 3.3°C, with minimum temperatures around 1°C. Although the total rainfall in millimetres is low throughout the year (averaging 2-3 mm per month), it is worth noting that the number of days with precipitation can be significant. For example, December and January see 16-17 rainy days, indicating frequent but generally light precipitation.

The climate in Karlsruhe is characterised by noticeable seasonal temperature fluctuations. The coldest month is usually January, when the average temperature is around 3.3°C, with night-time lows dropping to an average of 1.0°C and daytime highs reaching 5.6°C. The warmest period falls in July and August. In August, the average temperature reaches 21.0°C, with daytime highs often rising to 25.8°C, and night-time lows hovering around 16.3°C. July is also very warm with similar figures, where the average temperature is 20.9°C.

The summer months in Karlsruhe, from June to August, treat residents and visitors to pleasant warmth, occasionally turning into heat. Daytime temperatures consistently exceed 20°C, reaching an average of 24.5°C - 25.8°C, creating comfortable conditions for walking and outdoor relaxation. Summer nights are also warm, with temperatures rarely dropping below 14.7°C - 16.3°C. Winter, on the other hand, is cool, but usually without severe frosts. From December to February, average daytime temperatures range from 5.6°C to 8.4°C, while night-time temperatures can drop to 1.0°C - 2.0°C. Daily temperature fluctuations are most pronounced in the summer months, where the difference between day and night readings can be around 9-10°C, whereas in winter this difference is less significant, usually within 4-7°C.

In Karlsruhe, according to the data provided, very low levels of monthly precipitation are observed, usually amounting to just 2-3 mm. This indicates that intense or prolonged rains are not characteristic of the city in any season. There is no clearly defined rainy season in terms of precipitation volume, as the amount of rainfall remains consistently low year-round.

Despite the extremely small total volume, days with precipitation in Karlsruhe occur regularly. The highest frequency of such days is observed in winter: in December, there is an average of 17 days, and in January, 16 days. About 3 mm of precipitation falls during these months. Given the average temperatures (for example, in January from 1.0°C to 5.6°C), this may be very light rain, drizzle, or light snow. The fewest days with precipitation occur in September – about 10 days, with a total precipitation volume of 2 mm for the month.

In spring and summer, precipitation is also not uncommon, although the total volume remains minimal. For instance, in May there are about 14 days with precipitation (totalling 3 mm), and in summer months such as July and August, approximately 12 days each with precipitation (totalling 2 mm). The nature of this precipitation appears to be predominantly very light, possibly short-lived rain or drizzle. Overall, the climate of Karlsruhe, based on this data, suggests frequent but extremely insignificant amounts of precipitation throughout the year.

When packing your suitcase for a trip to Karlsruhe, remember that the weather here can be changeable, and light precipitation occurs quite often throughout the year – from 10 to 17 days a month. Therefore, comfortable shoes for long walks and a compact umbrella or a light waterproof jacket should definitely be on your list. The principle of layering your clothing will help you easily adapt to temperature changes throughout the day, which is particularly relevant for Karlsruhe.

During the cold period, roughly from November to March, when average temperatures range from 1°C to 11°C, you will need warm clothes: jumpers, an insulated jacket, a hat, a scarf, and gloves. For the spring and summer months, from April to October, when the air warms up on average from 10°C to 26°C, choose lighter clothing. T-shirts, shorts, and light trousers will be appropriate, but don't forget to pack a light jumper or cardigan for cool evenings or fresh mornings. On sunny summer days, sunscreen and headwear will come in handy for comfortable strolls around Karlsruhe.